F5 BIG-IP AFM IPS Signature Matching DoS TMM Restart
CVE-2024-21771 Published on February 14, 2024
F5 AFM Signature Matching Vulnerability
For unspecified traffic patterns, BIG-IP AFM IPS engine may spend an excessive amount of time matching the traffic against signatures, resulting in Traffic Management Microkernel (TMM) restarting and traffic disruption. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
Vulnerability Analysis
CVE-2024-21771 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2024-21771
stack.watch emails you whenever new vulnerabilities are published in F5 Networks Big Ip Advanced Firewall Manager or F5 Networks Big Ip. Just hit a watch button to start following.
Affected Versions
F5 BIG-IP:- Version 17.1.0 and below 17.1.1 is affected.
- Version 16.1.0 and below 16.1.4 is affected.
- Version 15.1.0 and below 15.1.9 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.